Regulating live steam and exhaust from steam-engines



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EEGULATING LIVE STEAM ANEEXEAUSE EEoM STEAM ENGINES.

810,881,149.- menteaApr.' 17,1888.,

INVENTOH- y No. 381,149. l

(Nomod'elg) 'i J'. J. LOWDEN'.

RBGULATINGIQLIVB STEAM AND EXHAUST PROM-STEAM BNGlNBs. v

i Patented Apr. "17, 1888.; i z

35 of any known or approved style.

Y .To all it may concern;

-. and use the same.

lzo

- these 'objects bythe mechanism illustrated in or separately with one automatic steam-presslure regulator; and I do hereby declare that the steam is used withoutexhaust.

UNITED j STATES PATENT f JAMES J. LowDnN, or BOSTON, MASSACHUSETTS.

Rl-:GULAI'lNc-iY LIVE STEAM ANDExHAUsT FROM STEAM-ENGINES.

y.SPHCIIE'ICATION forming part o Letters-Patent No. 381,149, lated April 17, 1,8188. i Application liled August 31, 1886. Serlal No. 212,337. (oinodel.) Y

Be it known that I, JAMES J. LOWDEN, a citizen ofl the United States, residingat Bos-` ton', State of Massachusetts, have invented certain'new and useful improvements in the means of regulating live steam and exhaust from a steam-engineboth at oneand the same time following is a full, clear, and exact description of the invention, `which will enable others skilledin the art to which it appertains to make In certain manufacturing processes it requires all the exhaustfrom the steam-engine and large or small-quantities of live steam, as the case may require. -.,Atothertimes there is no live steam required, but a small amount of exhaust-steam is sufficient. Again, the exhauststeam is dispensed: with and live steam alone isused.' v My invention relates to improvementsk in regulating two balance 'valves, one for livev steam and one for exhaust-steam from a steamengine, or separately, as requiredjwith one automatic steam-pressure regulator. Iattain the accompanying drawings. i

imilar letters refer to similar parts throughou f v Figure 1 is a generalview in perspective, parts being broken away. Fig. 2 is a View in perspective showing my improvement aslapplied to a paper-makingmachine.l f A is an automatic steam-pressure regulator vB is a pipe or receptacle to receive exhaust from a steam-engine, orlive steam, or both at one and the same time. v

C is a balance-valve 0n the branch exhaustpipe G. f D is a balance-valve on live steam pipe, throughwhich livesteam is admitted and con- ,Veyed in pipe' F and discharged into pipe H, where it forces the exhaust into pipe B.

I is a broken section in pipe II, showing how pipe F is inserted into pipe H.

J is a clearway-valve, to be closed when live f K and L are yWire ropes or'cords by which automatic steam-pressure regulator A operates and controls balanced valves C and D. It is tached from automatic steam-pressure.l reguofthe weightedleverl of valve G falls it opens the valve, but when Athe weighted lever of valveV D falls it closes the valve. This is effected by l shown aty O' how either cord K or Lis .de4

having the fulcrum of the levers on opposite e sides, the levero'fvalve C'bein'g fulerumed atv c and the leverof 'valve D fulcrumed on the A opposite side at d. l

In Fig. 2 I have shownmy'invention as ap-y plied to a paper-making machine, in which the steam from' pipe B is supplied to thecylinders P by branch pipes Q. wf y Y rIhe mode of operation is as follows: lWhen the exhaust from steam-engine is more than enough to maintain a given pressurein'pipe B, r

cord' K, that connects balance-valve Dfwith said regulator A, is disconnected, as shown atv O, and leaves valve D closed, shutting off live steam entirely. Automatic steam-pressure regulator A is set to, operate atany desired Y pressure to be maintained `inpipe B. *Said* regulator A isconnected to and controls vbalance-'valve G by cord L. If pressure in pipe,`

B. should rise abovethe point at which regulator A is set, said regulator A rises with the pressure and opens balanced valve vC and passes surplus exhaust through branch pipe G ont intorthe atmosphere' or elsewhere.y It',v

pressure in pi peB diminishes, regulator'A goes down accordingly andcloses valve G,andmore n g .Y exhaust passes topipeB fto'maiutain the desired pressure in said; pipe.. When exhaustf-v v steam from engine -is dispensed with,"cleary Way-valve J is closed and the cord L is detached from regulator A, as shown at O, thereby closing valve C. The 'cord K is connectedto regulator A, and by the operation of said regu- Y lator A valve D is Vcontrolled and regulated', so that the desired pressure inpipe B is 'main-l tained. As balance-valve C is closed, pressy ure Y cannot pass to branch lexhaust-pipe G, and` the `clearway-valve J lbeing 'also' 'closed pressure cannot pass to pipe E. When elear-V wayvalve J is open and exhauststeam is'used andis not sufficient to maintain a given'press-'f j ure lin pipe B, cords K and L are bothcon- .nected to regulator When saidl regulator A rises-by the pressure in pipe B, asshown,

vroc)y live steam is shut 0H by valve D, and a slack in cord K is drawn between the two pulleys bya small weight attached to cord K, as shown. At this time valve C is opened and surplus exhaust-steam passes through branch exhaustpipe G and out into atmosphere or any suitable receptacle. As the pressure in pipe B goes down, the regulator A goes down accordingly and closes valve C, when all the exhauststeam passes down pipe H, takes up slack in cord K, opens valve D, and applies live steam in connection with exhaust-steam, and mainl tains the desired pressure in pipe B, and forces the exhaust along to pipe B.

It depends on the amount of live steam required in connection with exhaust-steam as to how much slack is to be allowed in cord K, that controls live-steam valve D.

Among the many uses to which my invention is applicable are the following: in drying paper in the process of its manufacture, in boiling and rendering lard, in slashers for drying warp-yarns, in drying tobacco, in heating buildings,and in all cases where exhaust-steam is utilized for manufacturing 'or heating purposes.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In combination with an exhaust-steam pipe having a discharge-opening, a valve govconnected to the regulator, substantially as set Vforth.

3. In combination with an exhaust-steam.

pipe, a pressure-regulator connected to and operating two balance-valves, one on the livev steam pipe and one on the exhaust branch pipe, said valves being operated by the regulator in reverse direction to each other, so that when one valve is being opened the other' is being closed, substantially as set forth.

.I AMES J; LOWDEN.

Witnesses:

JAs. M. Bn'rToN, T. H. SNOW. 

